U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.

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Examiner: Dwyer, James L.


Primary examiner statistics: 1726 patents; average approval time: 726 days
Assistant examiner statistics: 325 patents; average approval time: 735 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
5745563 Telephone subscriber line circuit, components and methods
5619569 Coil cord snarl preventing device and method
5553131 Providing the most cost-effective long-distance telephone service...
5519770 Enhanced telephony apparatus and system
5517553 Wireless communication system
5488657 Apparatus for and method of operating an automatic log on/log off...
5485516 Line termination for a telephone line
5479505 Telephone network enclosure containing protected termination devi...
5475745 Abandoned call control and indication
5465294 System and method for recovering from a telecommunications disast...
5465290 Confirming identity of telephone caller
5461670 Telephone subscriber system incorporating a drive interface for a...
5461663 Selective call receiving apparatus having switch for clock time s...
5461665 Voice processing system
5459786 Loudspeaker telephone device comprising a novel noise suppressing...
5459787 Circuit for the implementation of an impedance for a telephone sp...
5459783 Acoustic feedback suppression device particulary for auxiliary ri...
5457742 Wireless telephone remote control system
5457741 Subscriber transmission system
5457743 Metallic channel unit network
5455855 System for connecting public network subscriber and private netwo...
5454033 Apparatus and method for controlling access to a telephone
5454037 Portable secure-telephone communications module
5454034 Arrangement for sharing a telephone office code
5452351 Electronic private branch exchange having an LCR function and a m...
5452350 Subscriber call routing processing system
5452352 Automatic dialing system
5452353 Canonical telephone numbers
5452348 Automatic call distribution system with emergency conferencing an...
5452340 Method of voice activated telephone dialing
5452347 Dual-line telephone bridging device that gives remote telephones ...
5450486 Telecommunication system and a linecard
5450487 Arrangement for the control of an echo canceller
5450475 Method for controlling electronic telephone switches
5450482 Dynamic network automatic call distribution
5450483 Method of controlling overloads in a telecommunications network
5450484 Voice detection
5448617 Method of processing intelligent network service call with DTMF ...
5448624 Telephone network performance monitoring method and system
5448627 Telephone apparatus with call forwarding arrangement

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
4578542 Line powered flasher circuit for ringing signal
4555596 Loudspeaking telephones
4538297 Aurally sensitized flat frequency response noise reduction compan...
4536618 Telephone line interface
4536620 Master unlock circuit for an electronic telephone
4536616 Microphone or mouthpiece signal suppression circuit
4536619 Ringing signal detection circuit
4536617 Remotely-activated switching apparatus
4535203 Bridge rectifier circuit
4533792 Circuit for switching between ring signal and message waiting sig...
4532382 Power supply for telephone equipment memory devices
4529845 Optical coupling interface circuit for telephone line ringing sig...
4529843 Subscribers telephone hold circuit with automatic disconnect
4529844 Pulse output telephone system with ring tap elimination
4527015 Security listening system
4527014 Loudspeaking telephone
4527282 Method and apparatus for low frequency active attenuation
4525602 Method of and a circuit for energizing a subscriber's circuit in ...
4525603 Ring and line monitor for answering machine
4523057 High gain cascode amplifier with negative feedback
4523058 Ringer signal wave shaping circuit
4521647 Tone detection system and method
4518829 Two terminal microphone active load gain regulation circuit
4517414 Hookswitch bounce resistant telephone hold-mute circuit
4517413 Telephone triggered switching system for transcriber
4517417 Communication system for a motor vehicle
4515996 Telephone circuit
4514599 Speaker for automotive vehicle audio system having a vehicle pane...
4513178 Signal processing arrangement
4508937 Method and circuitry for encoding telephone ringing signals
4506380 Method and apparatus for controlling the sound field in a vehicle...
4506115 Message alert system
4506114 Telephone circuit
4506113 Waveform clipping circuits
4504701 Telephone having circuitry for reducing the audio output of the r...
4501014 Method for eliminating unwanted acoustic signals in audio program...
4499340 Speaker for automotive audio system with vehicle panel utilized a...
4498119 Electronic circuit board and method and apparatus for thermal man...
4497980 Handsfree circuit for telephone instrument
4496797 Circuit for automatically connecting and disconnecting a speakerp...
 
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